package com.qike.yuandongguoji.config;//package com.qike.baoxiu.config;
//
//import com.alibaba.fastjson.JSONObject;
//import com.auth0.jwt.JWT;
//import com.auth0.jwt.JWTVerifier;
//import com.auth0.jwt.algorithms.Algorithm;
//import com.auth0.jwt.exceptions.JWTDecodeException;
//import com.auth0.jwt.exceptions.JWTVerificationException;
//import com.qike.baoxiu.response.RetResponse;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.http.HttpStatus;
//import org.springframework.web.bind.annotation.CrossOrigin;
//import org.springframework.web.method.HandlerMethod;
//import org.springframework.web.servlet.HandlerInterceptor;
//import org.springframework.web.servlet.ModelAndView;
//
//import javax.servlet.ServletOutputStream;
//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
//import java.io.IOException;
//import java.lang.reflect.Method;
//
///**
// * @Author: Eric.zhou
// * @Date: 2019/9/5 10:19
// */
//@CrossOrigin
//public class AuthenticationInterceptor implements HandlerInterceptor {
//    @Autowired
//     private ExcelUserMapper userService;
//    @Override
//    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object object) throws Exception {
//        if (httpServletRequest.getMethod()=="OPTIONS"){
//            return true;
//        }
////        String token = httpServletRequest.getParameter("token");
//        String token = httpServletRequest.getHeader("token");// 从 http 请求头中取出 token
//        // 如果不是映射到方法直接通过
//        if(!(object instanceof HandlerMethod)){
//            return true;
//        }
//        HandlerMethod handlerMethod=(HandlerMethod)object;
//        Method method=handlerMethod.getMethod();
//        //检查是否有passtoken注释，有则跳过认证
//        if (method.isAnnotationPresent(PassToken.class)) {
//            PassToken passToken = method.getAnnotation(PassToken.class);
//            if (passToken.required()) {
//                return true;
//            }
//        }else {
//        // 执行认证
//            if (token == null) {
////                return true;
//                returnJson(httpServletResponse);
////                throw new RuntimeException("用户不存在，请重新登录");
//                return false;
//            }
//            // 获取 token 中的 user id
//            String userId;
//            try {
//                userId = JWT.decode(token).getAudience().get(0);
//                System.out.println("userId 是+++"+userId);
//            } catch (JWTDecodeException j) {
//                returnJson(httpServletResponse);
////                throw new RuntimeException("用户不存在，请重新登录");
//                return false;
//            }
//            ExcelUser user = userService.selectByPrimaryKey(Integer.valueOf(userId));
//            if (user == null) {
//                returnJson(httpServletResponse);
//                throw new RuntimeException("用户不存在，请重新登录");
//            }
//            // 验证 token
//            JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(user.getPassWord())).build();
//            try {
//                jwtVerifier.verify(token);
//            } catch (JWTVerificationException e) {
//                returnJson(httpServletResponse);
//                throw new RuntimeException("用户不存在，请重新登录");
//            }
//            return true;
//        }
////        //检查有没有需要用户权限的注解
////        if (method.isAnnotationPresent(UserLoginToken.class)) {
////            UserLoginToken userLoginToken = method.getAnnotation(UserLoginToken.class);
////            if (userLoginToken.required()) {
////
////            }
////        }
//        return true;
//    }
//
//    @Override
//    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
//
//    }
//    @Override
//    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
//
//    }
//
//    private void returnJson(HttpServletResponse response) throws IOException {
//        ServletOutputStream outputStream = null;
//        response.setCharacterEncoding("UTF-8");
//        response.setContentType("application/json; charset=utf-8");
//        response.setStatus(HttpStatus.UNAUTHORIZED.value());
//        try {
////            writer = response.getWriter();
////            writer.print(JSONObject.toJSON(RetResponse.makeRsp(401,"token错误")));
//
//            outputStream = response.getOutputStream();
//            String json = JSONObject.toJSONString(RetResponse.makeRsp(401,"token错误"));
//            outputStream.write(json.getBytes());
//            outputStream.flush();
//            outputStream.close();
//        } catch (IOException e){
//        } finally {
//            if(outputStream  != null){
//                outputStream .close();
//            }
//        }
//    }
//}